﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace App15._1
{
    /// <summary>
    /// Interaction logic for Window1.xaml
    /// </summary>
    public partial class Window1 : Window
    {
        public delegate void CounterDelegate();

        public Window1()
        {
            InitializeComponent();
            Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.SystemIdle,
                new CounterDelegate(Add));
        }

        public void Add()
        {
            if (!_isStop)
            {
                _count++;
                textBlock.Text = _count.ToString();
                Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.SystemIdle,
                    new CounterDelegate(Add));
            }
        }

        public void OnClick(object sender, RoutedEventArgs args)
        {
            _isStop = true;
        }

        bool _isStop = false;
        int _count = 0;
    }
}
